Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae7010da1b691420…

MALICIOUS

PDF

76.1 KB Created: 2021-03-19 23:33:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 5af04ad77db898cd46b46259920f996f SHA-1: 964e4a603bd2eb511585248849aeb813e25f69c0 SHA-256: ae7010da1b6914207672daa517879ab8c5ab970d7144f2f016feff4a2986077b
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious intent, including random and disposable link farms pointing to external PDFs. The ML classifier and ClamAV detection strongly suggest this is a phishing or trojan delivery mechanism. The document body, though heavily obfuscated, contains references to 'Droidadmin for android', hinting at a potential malware family, and the embedded URLs are likely used to download a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://druttle.ru/123?utm_term=droidadmin+for+android+4.+4.+2 PDF link annotation
    • http://itfamily.pro/40231436435yqddg.pdfIn PDF document text
    • http://help-service-support.com/do_you_add_water_to_a_masterbuilt_electric_smoker3k50k.pdfIn PDF document text
    • http://punejew.mygamesonline.org/define_clarion_call_wiki.pdfIn PDF document text
    • http://muzolifuvekimew.22web.org/honeywell_quietset_whole_room_tower_fan_-_black_hyf290b.pdfIn PDF document text
    • http://dmgameplan.com/93051096099ouua.pdfIn PDF document text
    • http://devgm.design/what_is_sociology_of_education_ppt6emw4.pdfIn PDF document text
    • http://movawugutel.22web.org/how_to_calculate_nett_profit_margin.pdfIn PDF document text
    • http://vivadoctor.ru/raduwapizidajirutunavuwulpbzkx.pdfIn PDF document text
    • http://figuxovutofid.mygamesonline.org/92390020276.pdfIn PDF document text
    • http://zabavnyi-slon.ru/fabuwapanugevunodusewix4s4fy.pdfIn PDF document text
    • http://tlgfree.xyz/atoms_and_their_isotopes_worksheet_answersjutge.pdfIn PDF document text
    • http://topidanom.22web.org/art_history_timeline_for_elementary_students.pdfIn PDF document text
    • http://damvglaz2.xyz/answer_hitchhiker_s_guide_423vfes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://rilifufamorupud.epizy.com/blackstone_22_table_top_griddle_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5a8d3d7-3a06-47bf-aef3-adfc8fdacdb3/how_often_does_a_water_softener_regenerate.pdfIn PDF document text
    • http://telagivepovadul.epizy.com/60373738028.pdfIn PDF document text
    • http://fowimifefezujo.myartsonline.com/61824744662.pdfIn PDF document text
    • http://dojomasamolazib.epizy.com/38908513636.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6181f317-583c-430f-b450-79026e8fc22a/jikawa.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE9B 4684 bytes
SHA-256: 442525733dd8b046881cf3e26685bb2d81f63b25b80f324f598c847166b85219
font_01_sfnt_off0000ee68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE68 11528 bytes
SHA-256: a43f1365115a31ff2f8fcc8c4fe74a407c5b6c868505a0becdde3a86d6ff6b2d
font_02_sfnt_off00011515.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11515 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3